Cloth board and similar article



'septn 11,'192a* A, A H. ,Bl ASMITH K CLOTH Bomb AND SIMILAR 'ARTIGLE original Filed ont.' 143,4 192s y,

INVENTOR Y l f /l'a//f/(q/US' 771117Z BY ATTORNEYS Patented Sept. 1.1., 1928.

UNITED STATES PATENT OFFICE.

HARRY BRIDGMAN SMITH, OF BROOKLYN, NEW YORK, ASSGNOR TO LIGHTSHIP CLOTH BOARD CORPORATION, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

CLOTH BOARD AND SIMILAR ARTICLE Application led October 18, 1923, Serial No.` 669,392.y Renewed July 25, 1928.- y

My invention'rclates to cloth boards and similar articles,`and especially to cloth boards of the class commonly known as lap boards.

The principal object of the invention is to provide a cloth board or like article consisting of cardboard, strawboard orsimilar inexpensive sheet material, which isof exceedingly simple construction and is capable of being manufactured by a very rapid and economical method. f

A more particular object is to provide a novel two-ply construction for articles of this class in which the plies are adhesively secured together,` preferably by strips or stripes of adhesive separated by substantial "strips or areas ot the material which are uncoated with adhesive., in order to economize adhesive,- i'a'cilitate the proper drying of the adhesive and avoid warping of the material, and in preferred eases to additionally secure tne layers orv plies together by longitudinal edge binding. i i j The characteristics and advantages of the invention are furthersufliciently explained in connection with the followingdetail description ofV the accompanyingv drawings, which show certain exemplifying embodiments oli the invention, and also sufficiently u exililain one, preferred production method, which d oes not constitutey a part of the present in vention' but is explained herein toen'able the structure of the articles, and theiradvantages lrom the standpoint otl ease and economy ot' manufacture, to be more readily understood. After considering the present examples, persons skilled in the art will understand that many variations may be made within the principles ofthe invention, and I contemplate, the employment of any structures that are properly within the scope of the appended claims. n

Figure l is a `plan view of a cloth board or lap board embodying the invention in one form, with one of the component layers brolien away for explanatory purposes.`

Figure 2 is a transverse section of the same. Figure 3 is a diagramma-tic view sufficiently illustrating one preferred production method. f Figure 4 isa plan View sufficiently illus-` trating a modified style of gluing, -or glue pattern. f

In the representative embodiment shown in Figures 1 and 2, the complete cloth board, lap board or similar articleB comprises two layers or sheets 1 and 2 of suitable fibrous sheet material, such as cardboard or strawv board. These sheets are. usually rectangular and the board is usually, although not neces-` sarily, longer than 1t is wide. `The body sheets l and Q are adhesively secured together, and in the broader aspectot the. invention the adhesive connection may vary greatly and may include the complet-e coating of the engaging faces ot' the sheets; but in-aprcterred embodiment of the invention as here shown, the glue connection consists ot strips or stripes 3 of adhesive which are applied, before Contact of the sheets, to a vtace ot one of them; These' glue stripes or portions otthem, are arranged in approxiu'iately transverse or. diagonal di-l rections of the completed board, the particular arrangement shown in Figure l consisting t glue stripes arranged in wavy or curved lines, portions o'tthese lines running substantially diagonally of the board, and the glue stripes being preferably arranged so Athat a number ot the stripes will be intersected `by any straight line drawn parallel to the glued surface in generally longitudinal or transverse directions. An important feature ot' the glue. stripe arrzngement is that the stripes 3 areseparatcd by blank or unglued strips t the total unglued area being in vpractical exa1nples,almut equal to the glued area. In this way there is not only a. great economy in adhesive. but' when the two body-sheets l and 2 are placed together every Aglue stripe is adjacent to an unglued portion oit thematerial of both sheets., and these unglued bodies oi' material readily absorb moisture from the glue stripes and dissipate the moisture so that the completed board dries out rapidly, and "warpage, which 1s often experienced when sheet-sot' similar material are adhesively secured over their. entire surfaces, is largely or entirely avoided. lhile it is not necessary in all cases, in preferred examplestho longi 4tudinal edges ot the board are covered or bound by binding stripsV 5 `or any` suitable sheet material, usually paper of suit-able thicksie dinal edges, which avoids injury to even delicate or expensive tabrics which may be wound or. lappodJupon theiboard.

Figure 3 shows what I call a continuous i f method of producing the articles, this or siinilar'produetion methods beingl preferred in many cases, because of ltheir great speed and economy, In accordance" with this method l having printing surfaces 13 so disposed as to `the continuous combined webs. ent instance, one ot' the strip margins 6 1s apintermediate blank surfaces sin.

produce the curved or wavy glue stripes 3 with intermediatevunglued surfaces. At a suitable point in the advance of the continuous webs, they are brought together and pressed in adhesive contact, and at a suitable pointtlie binding material 5 is advanced in the forni of continuous strips from rolls 14 and adhesvely coated as sutlieiently indicatedby stippling, and` appliediii any suitable way to In the presplied to the lowerweb 2, leaving the other parts of the binding strips projecting, and then these projecting portions are turned over and adhesively secured tothe marginal surfacef yof the upper web.. The continuous binding strips may, of course, be initially applied to either of the webs before the lat ter are brought into assembly Contact. The continuous assembly A is now completed and ata conveiiientpoint in its further advance it is severedlaterally, usually at regular intervals, to produce the individual cloth boards, or lap boards B. .K

yFigure illustrates aniodifieation.I especially with reference to the glue stripe arrangement. In this instance the glue is applied in the forni of straight diagonal stripes 3 with This somewhat simpler inode of gluestiipiiig provides ainply for the adhesive connection of tliebody sheet-s and the substantial strengthening and stilfeiiing of them, and also provides for an e overlap ofglue stripes in any generally transverse or longitudinal direction of the board, also for the proper drying of the glue witliout wai-page, as sufficiently,explained above.

The `completed articles are very light but sullieiently stiff and strong for the purposes `in View, such for instance, as their use as lap boards upon which previously folded lengths of fabric are wound or lapped; they are very inexpensive both Jbecause of the cheap mate'- rials which may be employed, and rapid and economical production methods for which they are adapted. 4

lt will beappaient from' lthe drawinhs and from the description, that the lines'of adhesive are so arranged with respect to the webs, that the tendency of the webs to buckle `when rolled or folded on any line substantially parallel to the axis on which the board is rolled, will be restrained byflines of adhesive connecting thevwebs, which lines cross the `probable lines of buckle at a number of points. between the side edges of the boards. 'thus-it is .impossible for any line of separav tion transverse to the web between the webs to ranged with respect to the webs that the tendency of the webs to buckle when rolled or folded on any line substantially parallel to the axis on which the boardis rolled will be` restrainedby connecting lilies of adhesive between tlie webs crossing said probable line of vbuckle at a number of points between the side edges of the board.

2. Cloth boa-rd or the like, composed of superimposed webs connected by lines of adhsivespaced apart from each other a distance corresponding substantially to the width of the individual lines, the lines so arranged with respect to the webs that tlieitendenoy of the webs to buckle whenrolled or folded on any line substantially parallel toy the axis on which theboard is rolledwill be restrained by connecting lines of adhesive between the webs crossing said probable line of buckle at a number ofv points between the side edges of the board, parts of said connecting lines of ad .hesive extending atsubstantially right angles to other parts of the lines, so that a part of said lines run substantially longitudinal and other parts substantially transverse to the board, and edging strips for theboard.

Signed at Brooklyn, inthe county of Kings, and State of New Yorkythis 5th day of October A). i

HARRY `BRIDGMAN SMITH. 

